2006 PORSCHE CAYENNE TURBO sensor

266
Maintenance, Car Care
Fuel
Warning!
Fuel is highly flammable and harmful to
health.
fFire, open flame and smoking are prohibited
when handling fuel.
fAvoid contact with skin or clothing.
fDo not inhale fuel vapours.
To prevent damage to the emission control
system and engine:
fNever drive the tank completely out of fuel.
fAvoid high cornering speeds after the warning lights have come on.To avoid permanent damage to the functionality of
the catalytic converters and oxygen sensors, use
only unleaded fuel.
The engine is designed to provide optimum
performance and fuel consumption if unleaded
premium fuel with 98 RON/88 MON is used.
If unleaded premium fuels with octane numbers of
at least 95 RON/85 MON are used, the en-
gine's knock control automatically adapts the igni-
tion timing.
The emission control system can be damaged in
various ways (e.g. fuelling incorrectly, shortage of
fuel, tow-starting).
fPlease observe the chapter “HOW EMISSION
CONTROL WORKS” on Page 272.
fPlease observe the chapter “LEVEL GAUGE”
on Page 86.

272
Maintenance, Car Care
How Emission Control WorksWhen an automobile engine is running, it uses en-
ergy generated through the combustion of a mix-
ture of air and fuel. Depending on whether a car is
driven fast or slowly or whether the engine is cold
or hot, some of the fuel (hydrocarbons) may not
be burned completely, but may be discharged into
the engine crankcase or exhaust system. Additon-
al hydrocarbons may enter the atmosphere
through evaporation of fuel from the fuel tank.
These hydrocarbons (HC), when released into the
air, contribute to undesirable pollution.
In addition, carbon monoxide (CO) and oxides of
nitrogen (NOx) contribute to engine emissions.
They, too, are formed during the combustion proc-
ess and discharged into the exhaust system.
To reduce these pollutants, your Porsche is
equipped with a precisely calibrated fuel injection
system to assure a finely balanced air/fuel mixture
under all operating conditions.
Oxygen sensorThe oxygen sensor, installed in the exhaust pipe
continuously senses the oxygen content of the ex-
haust and signals the information to an electronic
control unit. The control unit corrects the air/fuel
ratio, so the engine always receives an accurately
metered air/fuel mixture.Crankcase ventilationThrough crankcase ventilation, undesirable emis-
sions from the engine crankcase are not permit-
ted to reach the outside atmosphere. These emis-
sions are recirculated from the crankcase to the
air intake system. From here the emissions mix
with the intake air and are later burned in the en-
gine.Catalytic convertersThe catalytic converters are efficient “clean-up“
devices built into the exhaust system of the vehi-
cle. The catalytic converters burn the undesirable
pollutants in the exhaust gas before it is released
into the atmosphere.
The exclusive use of unleaded fuel is critical-
ly important for the life of the catalytic con-
verters. Therefore, only unleaded fuel must
be used.The catalytic converters will be damaged by:
– push or tow starting the vehicle
– misfiring of the engine
– turning off the ignition while the vehicle is mov-
ing or
– driving until the fuel tank is completely empty
– by other unusual operating conditions.
fDo not continue to operate your vehicle under
these conditions, since raw fuel might reach
the catalytic converters. This could result in
overheating of the converters. Federal law pro-
hibits use of leaded fuel in this car.

274
Maintenance, Car Care
High-pressure cleaning units
Warning!
High-pressure cleaning units can damage
the following components:
–Tires
– Logos, emblems
– Painted surfaces
– Widened fenders
– Lock and latch of the removable towing attach-
ment
– Seals of the electrically retractable ball hitch
– Alternator, valve covers
– ParkAssist sensors.
fPlease observe the operating instructions from
the unit manufacturer.
fAlways cover the lid over the brake fluid reser-
voir prior to cleaning. Never point the cleaning
jet directly at the lid.
fWhen cleaning with a flat-jet nozzle or the like,
maintain a minimum distance of 50 cm
(21 in.).fNever use high-pressure cleaning units with a
round-jet nozzle.
A high-pressure cleaning unit with round nozzle
will damage your vehicle. The tires are particu-
larly susceptible to damage.
fDo not point the cleaning jet directly at any of
the aforementioned components.
WashingThe best protection for the car from the damaging
effects of the environment is frequent washing and
preservation. The underside of the car should also
be thoroughly washed for cinders, salt or sanding
at winter‘s end.
The longer salt, road dust, industrial dust, insect
remains, bird excrement, and tree exudations (res-
in, pollen), etc. are allowed to remain on the body-
work, the more serious is their harmful effect.
New cars should be washed carefully with plenty
of clear water to protect the new paint work.
Dark paint finishes show up the smallest of sur-
face damage (e.g. scratches) more readily than
lighter colors.
Dark colors are also more susceptible to scratch-
ing because of the composition of their pigments
and require particularly careful paint care.fDo not wash your car in bright sunlight or while
the bodywork is still hot.
fWhen washing by hand, use abundant water, a
soft sponge or wash brush and Porsche car
shampoo.
fBegin by spraying the body thoroughly with wa-
ter to rinse away loose dirt.
fAfter washing, rinse the car with plenty of wa-
ter and then dry with a chamois leather.
Do not use the same chamois leather for dry-
ing as you use for cleaning the windshield and
windows.

Maintenance, Car Care
275
Warning!
Moisture which gets on the brakes during a
car wash can reduce braking efficiency or
make the brake pull unevenly which could in-
crease the danger of an accident, causing
serious personal injuries or death.
fAlways apply the brakes a few times after
washing the car to test braking efficiency and
dry the brake discs.
When doing this, take care not to hamper other
road users behind you (traffic conditions per-mitting).
Automatic car washes
Optional add-on parts or parts which project be-
yond the contours of the vehicle may be damaged
by design features (e.g. brushes) of automatic car
washes.The following parts are particularly
susceptible to damage:
– Windshield wipers and rear wiper (always
switch them off – position 0 – to prevent them
wiping unintentionally in intermittent or sensor
operation).
– Door mirrors (always fold in).
– Roof Transport System (always remove com-
pletely).
– Spoiler.
– Wheels (the wider the rim and the lower the tire
height, the greater the risk of damage).
fPlease consult the operator before using
automatic car washes.
fWash and dry by hand all points not reached by
a car wash, such as door and lid seams or
door sills.
Note
Automatic car washes spray water at odd angles
and high pressures, which are not seen in normal
driving. Therefore, water can sometimes find its
way into the passengers compartment during or
shortly after the car wash.
Door lockfTo prevent the door lock from freezing during
the cold season, cover the lock barrel with a
suitable adhesive tape during washing.
fShould the locks freeze, use an ordinary de-ic-
er.
In many cases, a well warmed key can help.
Never use excessive force.

326
Practical Tips, Minor Repairs 22 Rear differential lock, transfer box30
23
Rear differential lock, disengageable anti-roll bars
10
24 Tire pressure monitoring5
2526 Engine control unit (engine management, radiator fans), airbag, instrument panel 1027282930313233
Steering column
15
34 Passenger compartment monitoring, inclination sensor5
35
Low beam left, high beam left, vehicle electrical system control unit
15
36 Vehicle electrical system control unit10
373839
Heated rear window
5
40 Instrument panel, diagnosis5
41
Steering column lock, ignition lock, central locking system, Porsche Entry & Drive
15
42 Sliding/lifting roof or Panorama roof30
43
Subwoofer
30
44 Electrical seat adjustment, left; electrical steering column adjustment 30 No. Designation Rating in A

Practical Tips, Minor Repairs
331
Fuse assignment – fuse box in engine compartmentNote
Use the plastic grippers from the fuse boxes in the dashboard to replace the fuses. No. Designation Rating in A
1
Fan
60
2Fan30
3
Secondary air pump
40
4 Secondary air pump 40
567
Fuel injectors, ignition coils
20
8 Fuel injectors, ignition coils20
9
Engine control module, camshaft adjusters, intake pipe switchover (Cayenne)
30
10Engine components: cooling air fan, carbon canister shut-off valve, pressure sensor for air conditioning, tank leakage detection,
run-on pump (Cayenne S), carbon canister shut-off valve valve (Cayenne)10
11
Engine existing wiring, secondary air pump (Cayenne), air-conditioning compressor (Cayenne), oil-level sensor (Cayenne)
15
12 Secondary air pumps, run-on pumps5
13
Fuel pump, right
15
14 Fuel pump, left15
15
Engine control module, main relay
10
16 Vakuum pump30
17
Oxygen sensors ahead of catalytic converter
15
18 Oxygen sensors behind catalytic converter7.5

378
Index
IndexAABD ......................................... 227
, 229
, 231
ABS ......................................... 227
, 230
, 233
Off road ............................................. 234
Warning light ...................................... 233
After driving off road................................... 237
Aftermarket Alarms ..................................... 185
Air cleaner.................................................. 261
Air conditioning
Central vents ............................. 145, 151
Cover flap .......................................... 142
Disabling control panel (rear) ............... 148
Display ...................................... 143, 147
Footwell .................................... 145, 151
Four zone ........................................... 147
Fresh-air intake ................................... 141
Mono function ..................................... 144
Rear.......................................... 148, 152
REST mode ............................... 146, 152
Sensors ............................................. 142
Setting air quantity ..................... 144, 150
Setting temperature ................... 144, 149
Side vents ................................. 145, 151
Two zone ........................................... 143
Vents ................................................. 141
Windshield ................................. 145, 151
Air quantity
Setting ...................................... 144, 150
Air suspension ................. 174
, 191
, 227
, 244
Airbag ................................................. 50, 281
Disposal ............................................... 51Function ............................................... 52
Switching off passenger airbag ............ 123
Switching on passenger airbag ............ 123
Unit ...................................................... 62
Warning light......................................... 54
Air-conditioned areas
Rear................................................... 152
Air-conditioning compressor....... 143
, 146
, 151
Alarm button................................................. 18
Alarm system ...................................................
24
, 26, 28, 29, 30, 32, 34, 35, 206
, 322
Alcantara.................................................... 281
All-Season tires ........................................... 368
All-Terrain tires ............................................ 368
All-wheel drive ........................... 128
, 227
, 229
Anti-freeze content ...................................... 256
Anti-lock brake system .............. 227
, 230
, 233
Anti-roll bars
Disengageable .................................... 225
Armrest............................................. 188, 190
Assembly aid ..................................... 310, 319
Assistance when driving downhill .................. 235
Audio
Tips ................................................... 183
AUTO button .................... 143
, 144
, 147
, 149
AUTO LOCK ................................................ 118
AUTO UNLOCK ........................................... 118
Automatic anti-dazzle operation...................... 69
Automatic brake differential ....... 227
, 229
, 231
Automatic circulating-air mode ............ 145, 150
Automatic mode,
air conditioning ......................... 143
, 144
, 149Automatic transmission fluid ........................ 261
BBattery ......................... 70
, 72, 89, 186
, 332
After charging ..................................... 345
Car key .............................................. 346
Care................................................... 332
Charge state....................................... 332
Charging ............................................ 345
Installing ............................................. 342
Putting vehicle into operation ...............333
Removing .................................. 340, 341
Removing/installing .................... 335, 339
Replacing ........................................... 334
Warning light....................................... 125
Winter driving...................................... 333
Before driving off.................................12, 237
Belts ............................................................ 46
Fastening ............................................. 48
Height adjustment ................................. 49
Opening ............................................... 48
Tensioner ............................................. 47
Warning light.................................. 47, 60
Brake ...........................................................75
Booster ................................................ 77
Discs ................................................... 78
Pads .................................................... 78
Warning light......................................... 76
Brake fluid
Changing ............................................ 259
Brake light .................................................. 356

Index
381
Evaporation control ............................. 270
Level gauges ........................................ 86
Recommendations .............................. 269
Fuel containers, portable ........................ 6
, 270
Fuel gauge ................................................... 86
Fuel quality ..................................................... 8
Function keys ............................................... 64
Lighting ................................................ 65
Fuse assignment......................................... 325
Fuses......................................................... 323
GGarage door opener.................................... 178
Allocating ........................................... 179
Changeable code system .................... 179
Deleting ............................................. 180
Fixed code system .............................. 179
Gear display ............................................... 215
Glasses case .............................................. 188
Glove compartment .................................... 189
Gross weight .............................................. 207
Ground clearance .............................. 374
, 375
HHand-held transmitter ......................... 178
, 179
Headlight beam adjustment ................ 123, 132
Headlights ................................ 210
, 279
, 349
Bi-Xenon ............................................. 351
Changing for left-hand traffic ................ 359
Closing the housing lid ........................ 351
Height adjustment ............................... 359
Opening the housing lid ....................... 351
Setting ............................................... 358Washer system ...................................136
Headrest ......................................................40
Installing ...............................................40
Removing .............................................40
Setting .................................................40
Heated rear window .........141
, 142
, 143
, 147
Height adjustment ..............................227, 244
High beam.........................................130, 133
Indicator light .................................80, 82
Switch ................................................133
High Range...............99
, 216
, 218
, 223
, 226
On-road driving program ......................222
High-pressure cleaning units.........................274
Horn ............................................................62
IIdentification number ...................................364
Idling..........................................................215
Ignition lock ..................................................70
Immobilizer...................................................21
Inclination sensor ..............24
, 26, 28, 34, 35
Function indication................................32
Monitored areas ....................................28
Switching off.........................................29
Switching on .........................................29
Switching on, temporarily.......................30
Instrument panel
Lighting ..............................................132
Interior light, front .......................................160
Interior lighting............................................160
Interior mirror ...............................................66
ISOFIX system...............................................60
JJack ................................................. 246
, 299
Jacking point ............................................. 307
Jump lead starting
Leads ................................................ 344
Jumper cables ........................................... 343
KKeys............................................................ 17
Changing the battery .......................... 346
Kickdown................................................... 217LLeather care .............................................. 280
Left-hand traffic.......................................... 359
Level control
..................... 98
, 174
, 191
, 227
, 244
, 301
Loading level.................... 245
, 246
, 375
Low level ........................................... 244
Normal level....................................... 244
Special low level................................. 244
Special terrain level ............................ 244
Switching on and off ........................... 246
Warning light ...................................... 246
License plate light............................. 162, 357
Lid
Engine compartment .......................... 199
Luggage compartment ....................... 194
Seal .................................................. 279
Lifting
Garage lift.......................................... 300
Jack .................................................. 307